HP Bios Update keeps on repeating Windows 7 won't load

Hi, i tried to change my 2G ram with another 2G ram in my HP Mini but it didn't worked out. So i returned the original ram. When i switched on, it initiated a HP BIOS Update. But after verifying the new BIOS image, it started all over again to HP BIOS Update. It just keeps on repeating. It won't load windows 7. I really appreciate it too much if someone could help me find a solution to fix this one. Thank you very very much.